Fig. (5) Single- and Multi-parameter Viability and Cytotoxicity Assays. CellTiter-Blue®, CytoTox-ONE™, CellTiter-Glo®, MultiTox-Fluor, MultiTox-Glo and CytoTox-Glo™ Reagents (Promega Corporation) were added to Jurkat cells treated for 6 hr with serial dilutions of ionomycin and signals measured as described in technical literature.